FactCheck.org’s SciCheck feature focuses exclusively on false and misleading scientific claims that are made by partisans to influence public policy. It was launched in January 2015 with a grant from the Stanton Foundation. The foundation was founded by the late Frank Stanton, president of CBS for 25 years, from 1946 to 1971.
Q: Is the use of acetaminophen during pregnancy linked to autism or ADHD?
A: There is currently no strong evidence that acetaminophen use during pregnancy causes autism or ADHD in children. Expert groups continue to recommend use of the drug during pregnancy when necessary and in consultation with a doctor.
Health problems that are reported to the Vaccine Adverse Event Reporting System after vaccination are not necessarily caused by a vaccine. Yet social media posts distorted a comment from a Centers for Disease Control and Prevention official about such reports to falsely say he admitted the vaccines cause “debilitating illnesses.”
Moderna’s CEO said in January that the company’s total production in 2019 was “100,000 dose,” referring to all its vaccines and therapeutics. Online posts distorted the remarks to falsely claim Moderna made COVID-19 vaccines “before the pandemic started.” Moderna’s first batch of COVID-19 vaccines wasn’t ready until February 2020.
Thai officials attributed the collapse of the king’s eldest daughter in December to a bacterial infection, not to COVID-19 vaccination, as some have baselessly claimed online. Rumors about the country banning Pfizer’s vaccines are also “fake news,” officials said.
Pregnancy tests contain a desiccant tablet to absorb moisture and keep the test dry before use. But posts on social media falsely claim the tablet is a “hidden plan B” pill. Companies that produce pregnancy tests include a warning on their websites not to consume the desiccant tablets inside.
Research suggests COVID-19 vaccination can cause changes in a person’s menstrual cycle. But the changes are small and short-lived — and studies have shown there’s no effect on fertility. Yet people on social media are suggesting the cycle changes are evidence of harm.
The relentless storms that hit California from Dec. 27 to Jan. 16 caused extreme flooding and extensive damage, killing at least 22 people. Climate scientists told us it’s too soon to know whether climate change had a role in this particular event, and if so, to what degree.
The warming trend in global temperature continued in 2022, which was the sixth-warmest year on record, according to a recent report from the National Oceanic and Atmospheric Administration. But a viral tweet — using just a small segment of a NOAA graph — wrongly claimed the agency had announced a “global cooling” trend.
Polio, a paralytic disease caused by a virus, has been eliminated in the U.S. — and nearly wiped out globally — thanks to vaccines. But social media posts are reviving old, false claims that polio is instead caused by pesticides and outbreaks of the disease ended when people stopped using DDT.
An unclear tweet from New York City health officials was meant to caution residents that the latest omicron subvariant, XBB.1.5, might be more likely than previous variants to infect vaccinated or previously infected people. Social media posts misinterpreted the tweet to mean that vaccinated people were at higher risk than unvaccinated people.